Unlike English, Catalan uses the indefinite article with plural nouns as well as singular nouns.

Catalan cardinal numbers may be used as masculine or feminine adjectives, except un/una(“1”), dos/dues(“2”), cents/centes(“100s”) and its compounds. When used as nouns, Catalan cardinal numbers are treated as masculine singular nouns in most contexts, but in expressions involving time such as la una i trenta (1:30) or les dues (two o'clock), they are feminine because the feminine noun hora has been elided.

The tongues, languages or regional variants have some very clear functions since the beginning of the centuries and some 8,000 languages have been accounted for in the world, each with its relative numerical importance, our Fala is another treasure among them.

A borrowing from Middle Low Germanun(“and”). It replaced, in this sense, the particle ir (compare Lithuanianir, which still has the sense of “and”). At first there were competing borrowings from other Germanic dialects (e.g. und, unde), and some forms were influenced by ir (resulting in ind, in), but from the 18th century on, the form un gradually became dominant.[1]